In Google Calendar, when I do "Add by URL" and add my ICAL feed, Google returns an error that it cannot parse the file. If I save the ical file to my PC and try to import that the Google Calendar, it gives the same error.
My Feed URL is:
The ical feed validates with 99/100 score here:
The events are written in Japanese which may be causing the problem.
I am using the latest version of WP and Events Organiser. But I also had this same problem one year ago with an older version of WP and this plugin. It has never worked.